Did you replace the hop up bucking and nub? Or is it still stock?

Hop up is still stock. This is the one part I don't really know about. The Bucking is the black rubber sleeve right? I've installed my tightbore so I've had to change barrels. All I did was remove the old barrel, take off sleeve and tiny o-ring on the end of it, replaced it on the tightbore and put the barrel back onto the hop-up unit. Did I miss something here that I might have screwed up??

I found that the stock hop up bucking does not sit nicely with the systema tightbore that I installed on to my ICS hopup, it wouldnt shoot and would sometimes double/triple/quadruple feed. And so i replaced my hopup bucking (sleeve) with the gaurder one. But the gaurder nub (small cylinder thing) is bigger than the ics nub so that needs to cut down to size.

After all that work it finally shoots great, like a monster.

I'll try to swap back to my original barrel to see if that's the problem.

The bucking is the little cylinder. If you take out the barrel and look down it from the nozzle end, you should be able to see the bucking move the sleeve as you turn it up and down. If it is not moving fully off to fully on, remove your barrel and check everything in the chamber again. When I install a new barrel or hop sleeve, I put a little silicone oil around the outside to help it slide into the chamber easier and let you avoid making any jerky movements during installation. This lets the bucking stay in its place and not cause you any grief.

Ok I just swap barrels back to the stock one and nothing changed.

When you press the trigger does the piston move? Could it be that you installed the cylinder backwards?

I installed my cylinder backwards once and the bbs had the same effect as yours it rolled out. The two holes on the cylinder should be facing the retractable stock (back end of the gun).

The cylinder isn't the problem. The bbs seem to get stuck in the hop-up unit.

I just noticed when loading one bb at a time that the nozzel doesn't seem to be going back all the way every shot. About every third shot the nozzel will go far enough back to let another chamber. Would this be the tappet or a timing issue?



Upgrades so far are:

Guarder Air Nozzel
Area 1000 piston and piston head
Guarder Spring Guide
TN Tightbore
Prometheus SP100 spring

You have almost the same set up as mine. Did you check that the tappet plate spring is connect to the frame correctly? Is it installed correctly?

I think it is. You just attach it to the shell and to the tappet right? There isn't any way of putting it on wrong it there?

Damn dude im stumped.... this is really weird...

Try this. Take out the hop up with the inner barrel. Make sure the hop up is fully turned off. Manually place in a bb into the chamber. Over the hole with your where the bb enters normally from a the mag. Blow into the bb. If it takes alot of effort. Then the problem is with your hop up bucking and sleeve.

The bb should normally be blown out of the hopup and inner barrel with some force but not enough to cause your vains to pop out.

Stokes, you've taken my teachings to heart, young grasshopper.

LOL! ALL FROM YOU BUD! ALL FROM THE KING of UPgrades HIMSELF!

When I tried putting the bb in the chamber and blowing it out it wouldn't move. Looks like it's time to take it to a gun doc.

You can fix this yourself trust me... I had the same problem. You dont have to send it to a gun doctor. The problem now is either your hop up sleeve is to tight or your hop up bucking is to big. I would replace the hopup sleeve with the gaurder one but keep the ICS hopup bucking as that bucking can only be used on the ICS and the ICS will not take any other bucking.

This will run you for about 7 to 9 Canadian Dollars. You dont have to pay a gun doctor to do this for you.